Tool-holder and tool-post.



T. wEIs's; v -TO0L HOLDER AND TOOL POST. APPLICATION FEED 0018, 1908.

2 sums-$311M 1'.

ATTORNEY Patented Apr. 18, 1911.

L. T WEISS. TOOL HOLDER AND TOOL POST.

- APPLIUATION FILED OUT. 8, 1908. V 989,674.

Patented Apr. 18, 191.1.

% JMIEIVTOR- v Pfi; 322

- ATTOR/VE M LOUIS T. wniss', or BROOKLYN, NEW roan TOOL-HOLDER nn rooL-ros'r.

esaera.

Specification of Letters Patent. Pa tented:

nn terrain Application filed October 8, 1908. Serial No. 456,756. a p p,

To all whom it may concern:

Be it known that I, LOUIS T. "v 'nrss, a citizen of the United States, and a resident ofthe borough of Brooklyn, county of Kings, and State of New York, 'haveinvented certain new and useful Improve- "ments in Tool-Holders and Tool-Posts, of which the following is a specification.

' My invention relates to improvements in tool holders and tool posts. I

By the use of my invention, I may do away with the danger of weakening tools,

especially when high speed tool steel is used;

I may economize material and work; and I may secure 'a very rigid construction and 'provide a ready means of adjusting the cutting edge of the tool.

Referring to the accompanying drawings, in which I have illustrated preferred forms of my invention, and in which similar reference letters designate corresponding parts: Figure 1 is a top View; Fig. 2, a side view; Fig. 3, a vertical section of Fig. 2; Fig. 4, a side View, partially broken away, of a modification of my inventiong Fig. 5 is a perspective view of another modification.

, Referring to the drawing (Figs. 1, 2 and 3) A designates atool post proper comprised oftwo' parts' B designates a lower body portion preferably provided with laterally extending flanges 0, 1), preferably formed integral with the lower body portion B, thereby providing a base for the post and convenient means for securing the same rigidly to any desired support, such as to the cross jslide of a lathe or other turning machine. .13 designates the upper body portion of suchitool post.

Said two parts of the body of my tool post may be of any relative proportion to suit the requirements of any given set of conditions or the preference of the manufacturer oruser. b, L designate elongated apertures in said base to permit t the work; a

the passing therethrough of bolts,screws or other suitable fastening devlcesfor attachm entto any suitable support contiguous to a i V G de'slgnates a screw or bolt passing down through a suitable opening or bore 9 extending through the vP P body portion and a suitable'distance intoth'e lower body portion,that portion ofthe opening or bore 9 which act with-the thread onthescrew or bolt extends into the lower b'ody' portion being interior-1y screw-threaded to co-" and that portion of tends through the upper body, portionbeing preferably left smooth and not threaded.

Said screw or bolt is piiovided with the usual head 9 abuttmg against theguppersurface of the body portion, so thatwhen such bolt is screwed home the upper andlowerbody-portions will be brought firmly together.

As shown at the reariofthe lower body Arranged adjacent tothe front edge of I the lower body portion Bi-andwextending transversely thereof, Irprovide a 4 semi-circular bushing-groove, ,lD,';,the-sedge of :the outer wall (Z thereofbeing cut .awayoincut down somewhat. Similarly; in,:the:upper body port-ion B, adjacent to'its front edge I have formed a corresponding semicircular groove D having the outer wall (Z cutaway and cut upward somewhat. 1 "E, E;designates bushings fittingin saidigrooves D, I) and adapted to rotate therein, andF designates a knife, tool or other. cutting instrument grasped betweensuch bushings.

As shown, I prefervtohave theifront of the upper body portion=extending beyond the outer edge of the lower bOClyIPOLtiOlI as at H, and to provide at or-near theiront 01' said upper body portion an :adjusting screw J extending verticallydown through the same so bear. againstfithe upper surface of the knife, tooliorzother cutting in;- strument when the parts-are arranged in operative position. A a

It willbe readily understood that so long as the bushings are of 'su-bstantially the same diameter as thecircleformed by.vthe two grooves D, D, or,- solong'as eaclrbushing, when a plurality thereof are used; are substantially segments ot' such circle,'they may "be of any; desired thickness and of any desired length, according to "the require v ments of the cutting implement toube femf'iIn the preferred embodiment shown,

wherein two segmental bushings are employed, each of the same is cut away to provide an opening for the cutting implement, thus leaving rear flanges e, 6, against which the rear edge of the knife, tool or other cutting instrument abuts and which prevent rearward movement thereof. These openings in the bushings may also, of course, be varied to suit the requirements of the cutting implement.

Theoperation of my invention is as follows Assuming the parts to be in the position indicated in Figs. 2 and 3, when it is desired to replace the tool shown therein with another, the mere loosening of the screw D will permit the top body portion B to be swung back on the rod C a sufficient distance to enable the cutting implement to be Withdrawn from the bushings or to enable the bushings themselves together with such cutting implement to be removed from the grooves D, D and replaced with other suitable bushings. When such cutting implement or cutting implement and bushings together have been replaced, the screw G is again screwed home, bringing the top and lower bod portions rigidly and securely together an gripping the cutting implement with a firm grip. If desired, of course, the

screw G may be altogether unscrewed until it clears the thread of the lower body portion and the upper body portion may be then swung back or off. Bushings. of suitable thickness and length for another tool or other implement to be used may be then selected and placed in the lower groove. The cutting implement and upper bushing may be then placed in position, the upper body portion swung Tack into place and the screw Gr screwed down. The height of the cutting edge may be roughly adjusted by hand be fore the screw G is driven to the last point. For an absolutely accurate adjustment of the height of the cutting edge, however, I preferably use a small set screw J, the lower end of which presses against the upper surface of the implement.

It will be seenthat I really have an oscillating bushing, that is to say, the two bushings taken together when the parts are in place are capable of being rotated on pressure within the limits permitted by the relative thickness of the cutting implement and the space between the outer edges or jaws of the upper or lower body portions. Consequently by settin the cutting edge originally somewhat above the desired point, driving the screw G in a suflicient distance to retard the free rotation of the bushings. then turning down the adjusting set screw, I can get the height of the cutting edge adjusted with the greatest nicety. By then driving the screw G home, the cutting implement will be held solidly and rigidly at the proper point of adjustment; Furthermore, when the tool is removed for any rea= son, such as for grinding, it may be replaced by hand, so that the cutting-edge thereof will occupy precisely the same vertical position as before removal without the necessity of further adjustment, or, in other words,

the former adjustment of such cutting edge need not be disturbed to remove the tool. Furthermore, as all the pressure exerted against the cutting edge is in a direction toward the set screw, such screw on account of its location slightly forward of the jaws or front edges of the body portion proper, will add greater rigidity thereto.

I may add that the rod C not only serves as a pivot but also gives greater rigidity to the structure when the parts are in position. It prevents any possibility of slipping and furthermore insures an absolutely accuratei'eadjusting of the top and bottom body portions.

I have shown a bushing in two parts or what may be called a split bushin It may not be necessary under all conditions to use a bushing entirely split. For example, the bushing might merely be weakened somewhat at its rear edge or it might be possible to use standardized bushings for standard ized implements,the bushings being in one piece and fitting over the rear end of the cutting implement relyin upon the resiliency of the metal to grip the implement when under pressure.

In Figs. 1, 2 and 3, I have shown a tool post or holder carrying a knife, tool or other cutting implement, with the cutting edge pointing downwardly and formed by the junction of the outer and lower faces of the implement, the adjusting screw being positioned above such knife or tool. It is obvious, however, that by slight modifications, my invention may be used advantageously for holding a knife, tool or cutting i1nplement with its cutting edge pointing upwardly and formed by the junction of the upper and outer faces of such implement, and in Fig. 5 I have shown a modification which is adapted to hold a cutting implement, having a cutting edge pointing in either direction.

Instead of the two body portions shown in Figs. 1, 2 and 3, I may use a body portion in one piece, provided with circular bushing grooves and a bushing or bushings of substantially the same diameter as the grooves, any suitable means being employed for exerting pressure between the bushing or bushings and the cutting implement. In Fig. 4-. which is a side view. partially broken away. I have shown a modification, in which the body portion is in one piece. In such a construction, pressure may be exerted directly on the upper bushing by means of a screw or bolt, such as G. or such pressure may be exerted on the bushing through the posed of one piece andslotted at L to render the same snliiciently resilient to permit pressure to be appl'ed between the portions sepa-' ated by such slot to grip the bushing or bushings. A circular bore or hole Z, extcnding transversely of the body portion and communicating with the rear of the slot is also preferably provided to further add to the resiliency of said body portion. As shown, this construction is provided with two bolts G G and a plurality of set screws J, J positioned both above and below the cutting implement, so as to limit or adjust either the upward or downward movement of the cutter and especially a very long cutter. I

The other parts of the constructions shown in. Figs. 4 and and theoperation of such modifications is substantially similar to that of the devices shown in Figs. 1, 2 and 3 heretofore described.

I prefer to employ a base of the general form shown as a means of securing the tool post to the support. Any suitable fastening means for so securing the same to the sup port may, however, be used. Similarly, I donot wish to restrict myself to the use of a set screw foradjusting the height of the blade. I

Having described my invention, what I claim as new therein and desire to secure by Letters Patent is:

1. In a tool post andholder, a base, a lower body portion rigidly secured thereto, an upper body portion, means for rigidly securing the upper body portion to the lower, and means for holding a cutting implement held by and between the upper and lower body portion and having its cutting edge projecting across and beyond the froirt face of that body portion coi'itiguous to the cutting ed I 2. In a tool post and holder, a post, comprising a body portion, means for securing the same to a suitable'support, a rotatable bushing for a cutting implement arranged in said body portioinand means for exert ing pressure on the bushing-to grip and hold the cutting implementrigidly with its cut ting edge projecting across and beyond the front face of that part of the body portion contiguous to the cutting edge.

3. In a tool post and holder, a post comprising upper and lower body portions, means for securing the lower body portion to a suitable support, a rotatable bushing for the cutting implement intermediate said body portions, and means for exerting pres sure between the same to grip and-hold the cutting implement rigidly with. its 'cutting edge projecting across and beyond the front face of that body portion contiguousto thc cutting edge. v p

t. In a tool post and holder, a lower-body portion provided with a base, an upper body portion. a rod arranged at the rear reserve as a pivot when the upper bodyportion'f-is in place, means for rigidly securii'ig the: body portions together, and nieansfor rigidly holding a cutting impleiheiitTsirranged at the front of the body portions an heldbetween them.

In a tool post and holder, a lower body portion provided with a base, an upper body portion, a cutting implement having its eutting edge projecting across and beyondthe front face of that body portion contigu one to the cutting edge, a bushing'adapted under pressure to grip the top and bottom surfaces of the cutting implement, a holder arranged in the body portions for thebushing, and means for rigidly securing the top and bottom, body portions together and eX- erting pressure on the bushing.

.6. In a tool post and holder, at lower body portion provided with a base, an upper body portion, a cutting implement having its cutting edge projecting across and beyond the front face of'that body port-ion contiguous to the cutting edge, a bushing adapted under pressure to grip the top and bottom surfaces of the cutting implement, a holder arranged in the body portions for the bushing, and means for rigidly securing the top and bottom body portions together and exerting pressure on the bushing, and means for adjusting the height of the cutting edge of the implement.

T. In atool post and holder, a lower body portion provided with a base, an upper body portion, a cutting implement, a bushing adapted under pressure to grip the top and bottom surfaces of the cutting implement,- a holder arranged in the body portions for the bushing, means for rigidly securing the top and bottom body portions together and exerting pressure on the bushing, and a set screw bearing against the upper surface of the cutting 'implement when in place. v

In a tool post and holder, at lower body portion provided with a base, an upper body portion, a cutting implement having its cutting edge projecting across and beyond the front face of thatbody portion contiguous to the cutting edge, a rotatable bushing adapted under pressure to grip the top and bottom surfaces of the cutting implement, a holder arranged in the body portions forthe bushing and means for rigidly securing the top and bottom body portions to.- gether and exerting pressure on V the bushing.

.9. In a tool 0st and holder, a lower body portion provi ed with a base, an upper body portion, a cutting implement, a rotatable bushing adapted under pressure to grip the top and bottom surfaces of the cutting implement, a holder. arranged in the body portion for the bushing, means for rigidly securing the top and bottom body portions together and exerting pressure on the bushing, and a set screw bearing against the'upper surface of the cutting implement When in place.

10. In a tool post and holder, a lower body portion provided with a base, an upper body portion, a cutting implement hav- -'ing its cutting edge projecting across and beyond the front face of that body portion contiguous to the cutting edge, a split bush ing adapted under pressure to grip the top and bottom surfaces of the cutting implement, a holder arranged in-the body portion for the bushing, and means for rigidly securing the top and bottom body portions together and exerting pressure on the bushing. a a

11. In a tool post and holder, a lower body portion provided with a base, an upper body portion, a cutting implement having 1ts cutting edge projecting across and beyond the front face of that body portion contiguousto the cutting edge, a split rotata'ble bushing adapted under pressure to grip the top and bottom surfaces of the cutting implement, a holder arranged in the body portion for the bushing, and means for rigidly securing the top and bottom bo dy portions together andexerting-pressure onthe bushing.

In witness whereof, I have signed my name to the foregoing specification in the presence of two subscribing witnesses.

, LOUIS T. WEISS. Witnesses Jos. F. OBniax, ANNA S. BROMBERG. 

